Kinetic Separation of Oxygen and Argon Using Molecular Sieve Carbon |
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Authors: | Salil U. Rege Ralph T. Yang |
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Affiliation: | (1) Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109-2136, USA;(2) Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109-2136, USA. |
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Abstract: | A pressure-swing adsorption (PSA) simulation study was performed for the separation of a mixture of 95% O2 and 5% Ar using a molecular sieve carbon (MSC) as the adsorbent. Two PSA cycles have been outlined to maximize the recovery of either argon or oxygen as a high purity product. The effect of cycle parameters such as cocurrent depressurization pressure, purge/feed ratio, pressure ratio and adsorption pressure on the separation of O2/Ar has been studied. It was found that it is feasible to obtain an argon product of purity in excess of 80% with reasonably high recovery using one of the cycles. The other cycle is capable of producing high purity oxygen (>99%) at high recovery (>50%) with reasonably high product throughputs. The PSA process can be conducted at room temperature and hence has an advantage over conventional processes like cryogenic distillation and cryogenic adsorption. |
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Keywords: | oxygen argon kinetic separation molecular sieve carbon pressure swing adsorption |
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